WO2021254312A1 - 驱动机构、功能模块组件及电子设备 - Google Patents

驱动机构、功能模块组件及电子设备 Download PDF

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Publication number
WO2021254312A1
WO2021254312A1 PCT/CN2021/100051 CN2021100051W WO2021254312A1 WO 2021254312 A1 WO2021254312 A1 WO 2021254312A1 CN 2021100051 W CN2021100051 W CN 2021100051W WO 2021254312 A1 WO2021254312 A1 WO 2021254312A1
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WO
WIPO (PCT)
Prior art keywords
cam
pushing
driving mechanism
component
pushing member
Prior art date
Application number
PCT/CN2021/100051
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English (en)
French (fr)
Inventor
蔡程
Original Assignee
维沃移动通信有限公司
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Filing date
Publication date
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Publication of WO2021254312A1 publication Critical patent/WO2021254312A1/zh

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G17/00—Structural details; Housings
    • G04G17/02—Component assemblies
    • G04G17/04—Mounting of electronic components
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/06—Input or output devices integrated in time-pieces using voice
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa

Definitions

  • This application relates to the technical field of electronic equipment, and in particular to a driving mechanism.
  • the application also relates to a functional module assembly and electronic equipment including the driving mechanism.
  • the purpose of the present application is to provide a driving mechanism to realize that the functional module is moved out of the electronic device when in use, and moved into the electronic device when not in use, so as to increase the screen-to-body ratio.
  • Another object of the present application is to provide a functional module assembly and an electronic device including the driving mechanism, so that the functional module can be moved out of the electronic device when in use, and moved into the electronic device when not in use to increase the screen-to-body ratio.
  • a driving mechanism for electronic equipment including:
  • a cam component the cam component has at least a pair of corresponding distal and proximal ends distributed along its circumferential direction, each pair of the distal end and the proximal end is located passing through the center of rotation of the cam component The line
  • a first pushing member and a second pushing member, the rotation center of the cam member is located between the first pushing member and the second pushing member that are relatively static to each other, the first pushing member and the second pushing member
  • the components are in contact and fit with the outer contour surface of the cam component
  • the power component is drivingly connected with the cam component, and the power component drives the cam component to rotate so that the rotation center and the first pushing component are between the first pushing component and the second pushing component The relative reciprocating linear movement in the direction of the connecting line.
  • the power member drives the cam member to rotate in a single direction.
  • the distance between the two intersection points of the outer contour line of the cam member and any straight line passing through the center of rotation is equal to the difference between the first pushing member and the second pushing member The distance between.
  • the driving mechanism further includes a linear moving part that moves in a direction parallel to the line between the first pushing part and the second pushing part; the first The pushing member and the second pushing member are fixed to the linear moving member, and the rotation axis of the cam member is fixed.
  • the driving mechanism further includes a linear moving part that moves in a direction parallel to the connecting line between the first pushing part and the second pushing part; the cam part It is rotatably connected to the linear moving part, and the positions of the first pushing part and the second pushing part are fixed.
  • the driving mechanism further includes a linear guide member, the linear guide member and the linear moving member guide and cooperate to guide the linear moving member to move in a linear direction.
  • the linear guide component includes a first guide rail and a second guide rail, and the first guide rail and the second guide rail respectively guide and cooperate with two ends of the linear moving component.
  • both the first pushing member and the second pushing member have an arc-shaped mating surface that is slidingly fitted with the outer contour surface of the cam member.
  • the cam member has an odd number of pairs of the distal end and the proximal end distributed along its circumference, and the distal end and the proximal end are along the
  • the cam components are evenly and alternately arranged in the circumferential direction.
  • the cam member has three pairs of the distal end and the proximal end distributed along its circumference, and the distal end and the proximal end are along the
  • the cam components are evenly and alternately arranged in the circumferential direction, and the arrangement angle between the adjacent distal end and the proximal end is 60°.
  • the present application also provides a functional module assembly, including a functional module and a driving mechanism, the driving mechanism is the driving mechanism as described in any one of the above, the functional module is drivingly connected to the driving mechanism, and the driving mechanism The functional module is driven to move back and forth along a straight line.
  • the functional module is one or more combinations of a camera module, a speaker module, and an earpiece module.
  • the present application also provides an electronic device, including a device body and a functional module, the device body is provided with an opening, and further includes the drive mechanism as described in any one of the above, the drive mechanism is provided on the device body, so The driving mechanism is drivingly connected with the functional module, and the driving mechanism drives the functional module to move out or into the device body in a straight line through the opening.
  • the power component of the driving mechanism is an ultrasonic motor, and the ultrasonic motor is drivingly connected with the rotating shaft of the cam component of the driving mechanism.
  • the driving mechanism provided in the present application includes a cam component, a first pushing component, a second pushing component, and a power component.
  • the cam component has at least one pair of corresponding distal and proximal ends distributed along its circumference, and each pair of distal The center end and the proximal end are located on a straight line passing through the center of rotation; the center of rotation of the cam member is located between the first pushing member and the second pushing member, and both the first pushing member and the second pushing member are in line with the outer contour of the cam member Surface contact coordination, the power part is drivingly connected with the cam part, and the power part drives the cam part to rotate, so that the rotation center of the cam part and the first pushing part are relatively reciprocating in the direction of the connection line between the first pushing part and the second pushing part move.
  • the power component drives the cam component to rotate.
  • the distal end gradually pushes into contact with the first pushing component or the second pushing component.
  • Both the first pushing member and the second pushing member are in contact with the outer contour surface of the cam member.
  • the distal end of the cam member can alternately push and contact the first pushing member and the second pushing member,
  • the rotation center of the cam component and the first pushing component are relatively reciprocated linearly in the direction of the connection line between the first pushing component and the second pushing component, thereby realizing the conversion of the input movement of the cam component rotation into the output of the reciprocating linear movement Exercise, when applied to electronic equipment, can realize that the functional module is moved out of the electronic device when in use, and moved into the electronic device when not in use, so that the functional module does not occupy the screen space of the electronic device and increases the screen-to-body ratio.
  • the functional module components and electronic equipment provided in this application adopt the driving mechanism in this application, it can be realized that the functional module can be moved out of the electronic device when in use, and moved into the electronic device when not in use, without occupying the screen of the electronic device. Space to increase the screen-to-body ratio.
  • FIG. 1 is a schematic structural diagram of an electronic device provided by an embodiment of this application.
  • FIG. 2 is a schematic structural diagram of a functional module component provided by an embodiment of the application.
  • Fig. 3 is a schematic structural diagram of a cam component of a driving mechanism provided by an embodiment of the application.
  • FIG. 4 is a schematic structural diagram of a power component of a driving mechanism provided by an embodiment of the application.
  • FIG. 5 is a working schematic diagram of a process of removing a functional module of an electronic device according to an embodiment of the application
  • Fig. 6 is a working schematic diagram of the leftward driving movement of the driving mechanism in Fig. 5;
  • FIG. 7 is a working schematic diagram of a process of moving in a functional module of an electronic device according to an embodiment of the application.
  • Fig. 8 is a working schematic diagram of the rightward driving movement of the driving mechanism in Fig. 7.
  • 1 is the device body
  • 11 is the strap
  • 12 is the dial
  • 2 is the functional module
  • 3 is the drive mechanism
  • 31 is the first guide rail
  • 32 is the cam component
  • 321 is the distal end
  • 322 is the proximal end
  • 323 Is the rotating shaft
  • 33 is the second guide rail
  • 34 is the linear moving part
  • 35 is the second pushing part
  • 36 is the first pushing part
  • 4 is the power part
  • 41 is the wear-resistant material layer
  • 42 is the elastomer
  • 43 is the piezoelectric Ceramic
  • 44 is the power supply circuit.
  • the present application provides a driving mechanism, which realizes that the functional module is moved out of the electronic device when in use, and moved into the electronic device when not in use, without occupying the screen space of the electronic device, and increasing the screen-to-body ratio.
  • the present application also provides a functional module assembly and electronic device including the driving mechanism, which realizes that the functional module moves out of the electronic device when in use, and moves into the electronic device when not in use, does not occupy the screen space of the electronic device, and increases the screen occupancy Compare.
  • an embodiment of the present application provides a drive mechanism 3, applied to electronic equipment, the drive mechanism 3 includes a cam member 32, a first pushing member 36, a second The pushing component 35 and the power component 4, wherein the cam component 32 has at least one pair of corresponding distal end 321 and proximal end 322 distributed along its circumference, which can be specifically one pair, two pairs, three pairs, four pairs, Five or more pairs.
  • the distance from the distal end 321 to the center of rotation of the cam component 32 is greater than the distance from the proximal end 322 to the center of rotation.
  • the distal end 321 is the end of the cam component 32 that is the farthest from the center of rotation.
  • the proximal end 322 is the end of the cam component 32 that is closest to the center of rotation.
  • Each pair of distal ends 321 and proximal ends 322 are located on a straight line passing through the center of rotation, and each pair of distal ends 321 and proximal The core ends 322 are respectively located on both sides of the center of rotation; the first pushing member 36 and the second pushing member 35 are relatively stationary with each other, that is, the first pushing member 36 and the second pushing member 35 maintain the same distance, the first pushing member in the figure 36 and the second pushing member 35 do not limit the arrangement direction of the two, and can also be set in reverse.
  • the rotation center of the cam member 32 is located between the first pushing member 36 and the second pushing member 35, and the first pushing member 36 and the second pushing member 36
  • the two pushing parts 35 are in contact with the outer contour surface of the cam part 32; the power part 4 is drivingly connected with the cam part 32, and the power part 4 drives the cam part 32 to rotate, so that the rotation center of the cam part 32 and the first pushing part 36 (because of The first pushing member 36 and the second pushing member 35 are relatively stationary, therefore, it can also be said that the center of rotation of the cam member 32 and the second pushing member 35) are connected between the first pushing member 36 and the second pushing member 35. Relative reciprocating linear movement in the direction.
  • the first pushing member 36 and the second pushing member 35 reciprocate in a straight line relative to the cam member 32. If the first pushing member 36 and the second pushing member 35 are fixed, the cam The member 32 reciprocates along a straight line relative to the first pushing member 36 and the second pushing member 35.
  • the working principle and working process of the driving mechanism 3 are as follows: during operation, the power component 4 drives the cam component 32 to rotate, and when the cam component 32 is in contact with the first pushing component 36 from the proximal end 322 to rotate to the distal end 321 and the first pushing During the contact of the member 36, the rotation center of the cam member 32 and the first pushing member 36 move relatively linearly in the direction of the connection line between the first pushing member 36 and the second pushing member 35, and the center of rotation and the first pushing member 35 The distance of the part 36 increases, and the distance between the center of rotation and the second pushing part 35 is shortened; when the cam part 32 continues to rotate in the same direction or in the opposite direction, the cam part 32 is rotated from the distal end 321 in contact with the first pushing part 36 Until the proximal end 322 is in contact with the first pushing member 36, during this process, the cam member 32 is rotated from the proximal end 322 and the second pushing member 35 until the distal end 321 is in contact with the second pushing member 35,
  • the distal end 321 of the cam member 32 can alternately push in contact with the first pushing member 36 and the second pushing member 35, so that the rotation center of the cam member 32 is in contact with the first pushing member 36.
  • Relative reciprocating linear movement occurs in the direction of the connection line between the first pushing member 356 and the second pushing member 35, so that the input motion of the rotation of the cam member 32 is transformed into the output motion of the reciprocating linear motion.
  • the functional module 2 can be moved out of the electronic device when in use, and moved into the electronic device when not in use, so that the functional module 2 does not occupy the screen space of the electronic device and increases the screen-to-body ratio. While meeting the functional requirements, the size, layout, or screen-to-body ratio of electronic devices are also taken into account.
  • the power component 4 drives the cam component 32 to rotate in a single direction.
  • the drive mechanism in the prior art that realizes the function module moving out and moving into the electronic device is usually a linear drive mechanism, that is, the function module is moved out and moved in through a motor and a transmission mechanism, and the switch in and out is changed by the rotation of the motor. Achieved.
  • the function module goes through the process of fast moving in and out, and the motor needs to go through a fast conversion process of forward rotation-emergency stop-reverse rotation.
  • the motor has a stop step in the middle, it affects As a result of the service life of the motor, it is easy to cause the moving out and moving in of the functional modules to be not smooth enough. Therefore, the power component 4 of the present application drives the cam component 32 to rotate in a single direction, which can also achieve the output of reciprocating linear motion.
  • the power component 4 drives the cam component 32 to rotate in a single direction.
  • the cam component 32 rotates from the proximal end 322 in contact with the first pushing component 36 to the process in which the distal end 321 contacts the first pushing component 36
  • the cam The rotation center of the member 32 and the first pushing member 36 move relatively linearly in the direction of the connection line between the first pushing member 36 and the second pushing member 35, and the distance between the rotation center and the first pushing member 36 increases, and The distance between the center of rotation and the second pushing member 35 is shortened;
  • the cam member 32 continues to rotate in the same direction, the cam member 32 rotates from the distal end 321 in contact with the first pushing member 36 to the proximal end 322 in contact with the first pushing member 36, During this process, the cam member 32 rotates from the proximal end 322 in contact with the second pushing member 35 to the distal end 321 in contact with the second pushing member 35.
  • the rotation center of the cam member 32 and the first pushing member 36 are in the first pushing member.
  • a relative linear movement occurs in the direction of the connecting line between 36 and the second pushing member 35, and the distance between the rotation center and the second pushing member 35 is increased, and the distance between the rotation center and the first pushing member 36 is shortened.
  • the distal end 321 of the cam member 32 can alternately push in contact with the first pushing member 36 and the second pushing member 35, so that the rotation center of the cam member 32 is in contact with the first pushing member 36.
  • Relative reciprocating linear movement occurs in the direction of the connection line between the first pushing member 356 and the second pushing member 35, so that the input motion of the cam member 32 rotating in a single direction is converted into the output motion of reciprocating linear motion.
  • the distance between the two intersection points where the outer contour line of the cam member 32 intersects with any straight line passing through the center of rotation is equal to the distance between the first pushing member 36 and the second pushing member 35,
  • the outer contour surface of the cam member 32 can maintain contact and fit with the first pushing member 36 and the second pushing member 35 at any rotation angle.
  • the cooperation between the cam member 32 and the first pushing member 36 and the second pushing member 35 is more continuous and smooth, and there is no disengagement of contact and cooperation, resulting in intermittent and stagnant actions.
  • the driving mechanism 3 further includes a linear moving part 34, which moves in a direction parallel to the line between the first pushing part 36 and the second pushing part 35; A pushing member 36 and a second pushing member 35 are fixed to the linear moving member 34, and the rotation axis of the cam member 32 is fixed.
  • the first pushing member 36 and the second pushing member 35 are positioned and fixed by the linear moving member 34, keeping the relative position unchanged, and the linear moving member 34, the first pushing member 36 and the second pushing member 35 can move linearly as a whole , And as the power output end; the cam member 32 can only rotate, not linear movement, therefore, a single direction of the cam member 32 can drive the first pushing member 36 and the second pushing member 35 to move back and forth in a straight line, and move through a straight line
  • the component 34 outputs linear movement.
  • linear moving part 34 may not be provided, and the first pushing part 36 and the second pushing part 35 can be directly connected to external parts as power output ends.
  • the driving mechanism 3 also includes a linear moving part 34 that moves in a direction parallel to the line between the first pushing part 36 and the second pushing part 35.
  • the cam member 32 is rotatably connected to the linear moving member 34, and the positions of the first pushing member 36 and the second pushing member 35 are fixed. With this arrangement, the cam member 32 and the linear moving member 34 move in the linear direction as a whole. At the same time, the cam member 32 can rotate on the linear moving member 34. During the rotation of the cam member 32, the cam member 32 is fixed and immobile.
  • the first pushing member 36 and the second pushing member 35 cooperate, so that the cam member 32 and the linear moving member 34 move together in a linear direction relative to the first pushing member 36 and the second pushing member 35, and the linear moving member 34 is output as the power output end Move in a straight line.
  • linear moving part 34 may not be provided, and the cam part 32 may be directly connected to an external part to output linear motion.
  • the driving mechanism 3 further includes a linear guide member, which is guided in cooperation with the linear moving member 34 for guiding the linear moving member 34 to move in a linear direction.
  • the linear guide member only allows the linear moving member 34 to move in the linear direction, and cannot rotate. Therefore, it is ensured that the rotation of the cam member 32 is converted into the linear movement of the linear moving member 34.
  • the linear guide component includes a first guide rail 31 and a second guide rail 33, and the first guide rail 31 and the second guide rail 33 respectively guide and cooperate with two ends of the linear moving component 34.
  • the linear moving part 34 is preferably a rod-shaped part, and the rod-shaped part moves linearly along its length.
  • the first rail 31 and the second guide rail 33 respectively guide and cooperate with the two ends of the rod-shaped part, and only allow the rod-shaped part to move in the linear direction.
  • the rod-shaped member is not allowed to rotate about its axis or to rotate about the rotation axis of the cam member 32.
  • the linear moving part 34 can be guided smoothly by the first guide rail 31 and the second guide rail 33.
  • the linear guide part may also be one guide rail or more guide rails.
  • the linear guide component is a guide groove structure, and the linear moving component 34 is provided with a guide block that cooperates with the guide groove structure to guide, which can also achieve linear guidance, and is not limited to the structure listed in this embodiment.
  • both the first pushing member 36 and the second pushing member 35 have an arc-shaped mating surface that is slidingly fitted with the cam surface of the cam member 32, so that the cam surface of the cam member 32 is aligned with the first pushing member 36 and the first pushing member 36 and the first pushing member 36.
  • the first pushing member 36 and the second pushing member 35 are preferably cylindrical rods, and the cylindrical rods are parallel to the rotation axis of the cam member 32.
  • the cam member 32 is provided with an odd number of pairs of the distal end 321 and the proximal end 322 along its circumferential direction, that is, the number of pairs of the distal end 321 and the proximal end 322 is one pair, three pairs, Five pairs, seven pairs, etc., the distal end 321 and the proximal end 322 of the cam component 32 are evenly and alternately arranged in the circumferential direction. Take three pairs of the distal end 321 and the proximal end 322 as an example for description. As shown in FIG. 3, the three distal ends 321 and the three proximal ends 322 are arranged alternately and evenly.
  • the included angle between 322 is 60°, forming a triangular gear-like structure.
  • the linear movement changes its direction once.
  • the direction of the linear movement changes once every time the cam member 32 rotates 180°.
  • the direction of the linear movement changes once every time the cam component 32 rotates 36°.
  • the cam member 32 preferably adopts the structure of three pairs of the distal end 321 and the proximal end 322, which is simple in structure, and the rotation angle of the cam member 32 and the time required for the linear movement to change direction are appropriate.
  • the cam member 32 can also be provided with other pairs of the distal end 321 and the proximal end 322.
  • the cam member 32 having an even number of pairs of the distal end 321 and the proximal end 322 in order to make each pair of the distal end 321 And the proximal end 322 are located on the same straight line that passes through the center of rotation of the cam member 32, and the even-numbered pairs of the distal end 321 and the proximal end 322 cannot be evenly distributed along the circumferential direction. In this way, although linear reciprocating movement can be achieved, regularity cannot be achieved. Cyclical linear reciprocating movement.
  • an embodiment of the present application also provides a functional module assembly, including a functional module 2 and a driving mechanism, wherein the driving mechanism is as in any of the above embodiments
  • the functional module 2 is drivingly connected to the driving mechanism 3
  • the driving mechanism 3 drives the functional module 2 to reciprocate along a straight line.
  • the functional module 2 moves in a straight line together with the first pushing member 36 and the second pushing member 35 .
  • the cam component 32 cooperates with the first pushing component 36 and the second pushing component 35 to drive the first pushing component 36, the second pushing component 35 and the functional module 2 together along a straight line Move back and forth.
  • the cam component 32 cooperates with the first pushing component 36 and the second pushing component 35 to push the cam component 32 and the functional module 2 together to reciprocate along a straight line in the opposite direction.
  • the functional module 2 moves linearly and reciprocally under the drive of the driving mechanism 3, so that the functional module 2 is moved out of the electronic device when in use, and moved into the electronic device when not in use, so that the functional module 1 does not occupy the screen space of the electronic device. , Improve the screen-to-body ratio.
  • the power part 4 drives the cam part 32 to rotate in a single direction. Therefore, when the functional module 2 is driven by the driving mechanism 3 to perform rapid linear reciprocating movement, there is no need for the intermediate emergency stop cam part 32 and no need to change the cam.
  • the rotation direction of the component 32 makes the driving mechanism 3 move smoothly back and forth.
  • the functional module 2 is one or more combinations of a camera module, a speaker module, and an earpiece module. That is, the functional modules 2 that can be moved out and moved in an electronic device can be applied to the driving mechanism 3 in this application.
  • an embodiment of the present application also provides an electronic device, including a device body 1 and a functional module 2, and the device body 1 is provided with Opening, the electronic device further includes a driving mechanism 3 as described in any of the above embodiments.
  • the driving mechanism 3 is provided in the device body 1, and the driving mechanism 3 is drivingly connected to the functional module 2.
  • the driving mechanism 3 drives the functional module 2 to move out or move in a straight line.
  • the functional module 2 can be directly fixedly connected with the first pushing member 36 and the second pushing member 35.
  • the module 2 can be linearly guided and moved in the device body 1; alternatively, a linear moving part 34 is provided, one end of the linear moving part 34 is fixed to the functional module 2, and the first pushing part 36 and the second pushing part 35 are fixed to the linear moving part 34, The linear moving part 34 linearly moves in the apparatus body 1.
  • the removal and removal operations of the functional module 2 of the electronic device are as follows: in operation, as shown in Figures 5 and 6, during the process of moving the functional module 2 out of the device body 1, the cam component 32 rotates under the drive of the power component 4, as shown in FIG. It shows that the cam member 32 rotates clockwise. Of course, it can also be rotated counterclockwise.
  • the distal end 321 and the proximal end 322 of the cam member 32 are matched with the first pushing member 36 and the second pushing member 35, and the distal end 321 The first pushing member 36 is pushed to move toward the outside of the device body 1 in a straight line.
  • the first pushing member 36 and the second pushing member 35 are fixed, and the cam member 32 can move linearly
  • the first pushing member 36 and the second pushing member 35 are fixedly arranged on the device body 1, and the cam member 32 can be rotatably connected
  • the functional module 2 can be linearly guided and moved in the device body 1; alternatively, a linear moving part 34 is provided, one end of the linear moving part 34 is fixed to the functional module 2, and the cam part 32 is rotatably connected to the linear moving part 34, The linear moving part 34 linearly moves in the apparatus body 1.
  • the removal and removal operations of the functional module 2 of the electronic device are as follows: in operation, as shown in Figures 5 and 6, during the process of moving the functional module 2 out of the device body 1, the cam component 32 rotates under the drive of the power component 4, as shown in FIG. It shows that the cam member 32 rotates clockwise. Of course, it can also be rotated counterclockwise.
  • the distal end 321 and the proximal end 322 of the cam member 32 are matched with the first pushing member 36 and the second pushing member 35, and the distal end 321 Pushing into contact with the second pushing member 35, since the second pushing member 35 is fixed, the cam member 32 and the linear moving member 34 are pushed in the reverse direction to move toward the outside of the device body 1 in the linear direction.
  • the cam member 32 When the apex of the distal end 321 and When the second pushing member 35 is in contact, and the apex of the proximal end 322 is in contact with the first pushing member 35, taking three pairs of the distal end 321 and the proximal end 322 as an example, the cam member 32 has rotated 60°. At this time, the function The module 2 is moved out to the maximum removal position of the device body 1, and the power component 4 can stop driving the cam component 32 to rotate, so that the functional module 2 can be moved out of the device body 1.
  • the power component 4 continues to drive the cam component 32 to rotate in the same direction or in the reverse direction.
  • the distal end 321 of the cam component 32 and the first pushing component 36 pushes into contact. Since the first pushing member 36 is fixed, the cam member 32 and the linear moving member 34 are pushed in the opposite direction to move in the linear direction toward the inside of the device body 1.
  • the cam member 32 is rotated again by 60°, or reversely rotated by 60°, At this time, the functional module 2 is moved to the maximum moving-in position of the equipment body 1, that is, the reset position, and the power component 4 can stop driving the cam component 32 to rotate, so that the functional module 2 is moved into the equipment body 1.
  • the electronic device adopts the driving mechanism 3 in the present application, so that the function module 2 can be automatically moved out and moved in.
  • the function module 2 performs linear reciprocating movement under the drive of the driving mechanism 3 to realize the function module 2 Move out of the electronic device when in use, and move into the electronic device when not in use, so that the functional module 2 does not occupy the screen space of the electronic device and increases the screen-to-body ratio. While meeting the functional requirements, the size, layout, or screen-to-body ratio of electronic devices are also taken into account.
  • the power component 4 drives the cam component 32 to rotate in a single direction.
  • the intermediate emergency stop cam component 32 is not required. There is no need to change the direction of rotation of the cam component 32 to make the driving mechanism 3 move smoothly.
  • the power component 4 is driven by a motor, the motor does not need to stop and change direction, thereby increasing the service life of the motor.
  • the power component 4 is an ultrasonic motor, and the ultrasonic motor is drivingly connected with the rotating shaft 323 of the cam component 32.
  • the ultrasonic motor mainly includes a power line 44, a piezoelectric ceramic 43, an elastic body 42 and a layer 41 of wear-resistant material.
  • the power line 44 is used to provide high-frequency alternating current signals
  • the piezoelectric ceramic 43 is a ring-shaped piezoelectric ceramic sheet
  • the piezoelectric ceramic 43 is connected to the power line 44.
  • the piezoelectric ceramic 43 can be made of BaTiO 3 , PZT and other materials, elastomers 42 is attached to one end of the piezoelectric ceramic 43, which can deform, such as a copper sheet, which can increase the amount of deformation. You can choose whether to use it according to actual needs.
  • One end of the wear-resistant material layer 41 is in frictional contact with the elastic body 42, and the other end is One end of the rotating shaft 323 of the cam component 32 is combined, and the wear-resistant material layer 41 can be a carbon nano material.
  • the working principle of the ultrasonic motor is: the piezoelectric ceramic 43 uses the inverse piezoelectric effect to alternately stretch and deform under the electric field formed by the high-frequency alternating current signal (each time the amplitude is about 2-5 microns, and it stretches 70,000 to 10 per second. Ten thousand times, the displacement can reach several centimeters per second, which can meet the needs of the product).
  • the elastic body 42 forms a traveling wave that rotates along the circumferential direction of the annular ceramic sheet, so that any point on the surface of the elastic body 42 is formed according to the The elliptical trajectory ultrasonic vibration. This vibration is amplified by the elastic body 42.
  • the frictional contact between the elastic body 42 and the wear-resistant material layer 41 causes the wear-resistant material layer 41 to rotate. Because the shaft 323 is bonded and fixed on the wear-resistant material layer 41 , So that the rotating shaft 323 and the wear-resistant material layer 41 rotate together, thereby driving the cam component 32 to rotate.
  • the ultrasonic motor When working, the ultrasonic motor is powered to generate torque, which drives the cam component 32 to rotate in a single direction.
  • the ultrasonic motor stops supplying power, the torque disappears, and the cam component 32 stops rotating, and can rely on the gap between the elastic body 42 of the ultrasonic motor and the wear-resistant material layer 41 The static friction stays in the rotating position.
  • the ultrasonic motor is used as the power component 4. Because it does not require coils and magnets, the ultrasonic motor does not generate electromagnetic waves and noise, so the external environment has little influence on it, no electromagnetic interference, and no impact on the electronic components of electronic products; in addition, compared to other power components 4.
  • the ultrasonic motor has a simple structure, which can save a lot of space, especially in the thickness direction of electronic equipment.
  • the power component 4 can also be a combination of a stepping motor and a reducer, which can also achieve power driving, but the structure is not as simple as an ultrasonic motor, and there is electromagnetic interference.
  • the ultrasonic motor is connected to the processor in the device body 1 for control; the processor is used to obtain the removal instruction of the functional module 2, and then control the ultrasonic motor to power and rotate
  • the processor controls the ultrasonic motor to stop power supply rotation; when the processor obtains the move-in instruction of the functional module 2, it controls the ultrasonic motor to continue power supply rotation,
  • the processor controls the ultrasonic motor to stop power supply and rotation.
  • the move-out instruction and the move-in instruction can be triggered by physical buttons or virtual buttons or wireless signals.
  • the processor is preset with a time control program. After the processor obtains the move-out instruction or the move-in instruction, the processor controls the power supply rotation time of the ultrasonic motor through the time control program, so that the functional module 2 is moved out to the designated position or moved in. Reset.
  • the power supply rotation time is determined according to the rotation law of the cam component 32. Taking three pairs of the distal end 321 and the proximal end 322 as an example, the time required for each 60° rotation of the cam component 32 is the power supply rotation time.
  • the power supply rotation time is preset in the middle, and the processor will stop the power supply rotation when the working time of the ultrasonic motor reaches the power supply rotation time from the moment when the processor obtains the removal instruction or the movement instruction. Thus, the function module 2 is automatically moved out and moved in.
  • the electronic device further includes a displacement detection module, which is connected to the processor in a control manner, and the displacement detection module is used to detect that the functional module 2 is relative to each other.
  • the position information of the device body 1 after the processor obtains the move-out instruction or the move-in instruction, it controls the power supply rotation time of the ultrasonic motor by acquiring the position information detected by the displacement detection module, so that the functional module 2 moves out to the designated position or into the position.
  • the processor When working, when the functional module 2 is moved out of the device body 1, if the displacement detection module detects that the functional module 2 reaches the designated removal position, the processor obtains the position information detected by the displacement detection module and controls the ultrasonic motor to stop power supply and rotation. When the module 2 is moved into the device body 1, if the displacement detection module detects that the functional module 2 reaches the reset position, the processor obtains the position information detected by the displacement detection module and controls the ultrasonic motor to stop power supply and rotation. Thus, the function module 2 is automatically moved out and moved in.
  • the power supply control of the ultrasonic motor can also detect the rotation angle of the cam member 32 through an angle sensor. Taking three pairs of the distal end 321 and the proximal end 322 as an example, when it is detected that the cam member 32 has rotated 60° from the reset position When the angle sensor detects the angle information, the processor controls the ultrasonic motor to stop the power supply rotation. At this time, the functional module 2 moves out to the specified position; when the angle sensor detects that the cam component 32 continues to rotate 60° from the removed position, the processor Obtain the angle information detected by the angle sensor, and control the ultrasonic motor to stop power supply and rotation. At this time, the functional module 2 moves into the moving-in position.
  • the electronic device is a wearable electronic device
  • the wearable electronic device can be a smart watch, smart bracelet, smart glasses, smart gloves, smart helmet, smart clothing or smart shoes, etc., as long as the functional module 2 is removed and The imported wearable electronic devices are all within the protection scope of this application.
  • the functional module 2 is one or more combinations of a camera module, a speaker module, and an earpiece module. That is, the functional modules 2 that can be moved out and moved in in the wearable electronic device can be applied to the driving mechanism 3 in this application.
  • the functional module 2 can be a camera module, and the device body 1 includes a dial 12 and a strap 11.
  • the dial 12 is equipped with a display screen. In addition to indicating the time, it can also have reminders, navigation, calibration, monitoring, and interaction.
  • One or more of the functions; display methods include pointers, numbers, images, etc.
  • the camera module is drivingly connected with the driving mechanism 3. Specifically, the camera module is fixed to one end of the linear moving part 34.
  • Step 1 Click the Selfie mode on the interactive interface of the display screen to trigger the removal instruction
  • Step 2 After the processor receives the removal instruction, it sends a power supply signal to the power line of the ultrasonic motor.
  • the power line 44 generates a high-frequency alternating current signal.
  • This high-frequency alternating current signal is loaded on the piezoelectric ceramic 43, which is a piezoelectric ceramic 43 will alternately stretch and deform.
  • the elastic body 42 Under certain frequency and voltage conditions, the elastic body 42 will form a traveling wave that rotates in the circumferential direction, so that any point on the surface of the elastic body 42 will generate ultrasonic vibration according to an elliptical trajectory. This vibration passes through the elastic body 42 and The friction between the wear-resistant material layer 41 causes the wear-resistant material layer 41 and the rotating shaft 323 to rotate, thereby driving the cam component 32 to rotate;
  • the third step the cam component 32 rotates, and the first pushing component 36 and the second pushing component 35 cooperate with each other to push the linear moving component 34 to move to the left, so that the camera module extends to a specified position, and the processor controls the ultrasonic motor to stop power supply , Realize taking pictures.
  • Step 1 Click the stop mode on the interactive interface of the display screen to trigger the move-in instruction
  • Step 2 After the processor receives the move-in instruction, it sends the same power supply signal to the power line 44 of the ultrasonic motor again.
  • the power line 44 generates a high-frequency alternating current signal, which eventually causes the cam component 32 to continue to rotate.
  • the first pushing part 36 and the second pushing part 35 continue to move in cooperation, pushing the linear moving part 34 to move to the right in the reverse direction, so that the camera module is retracted to the moved-in position, the processor controls the ultrasonic motor to stop power supply, and the camera is turned off.
  • the smart watch can automatically move out when the camera module is in use, and automatically retract when not in use, so that the camera module can be automatically moved out and in, thereby increasing the display area of the smart watch, increasing the screen-to-body ratio, and improving users Experience.
  • the camera module is arranged on the side of the dial 12, which is not on the same side as the strap 11, so that the camera module can be removed easily.

Abstract

一种驱动机构，用于电子设备，其包括：凸轮部件(32)，具有沿其周向分布的至少一对对应的远心端(321)和近心端(322)，每对远心端(321)和近心端(322)均位于经过凸轮部件(32)的转动中心的一直线上；第一推动部件(36)和第二推动部件(35)，转动中心位于两者之间，第一推动部件(36)和第二推动部件(35)均与凸轮部件(32)的外轮廓面接触配合；动力部件(4)，与凸轮部件(32)驱动连接，动力部件(4)驱动凸轮部件(32)转动，使转动中心与第一推动部件(36)在第一推动部件(36)和第二推动部件(35)之间的连线方向上相对往复直线移动。还公开了一种功能模块组件及一种电子设备。

Description

驱动机构、功能模块组件及电子设备
相关申请的交叉引用
本申请主张在2020年6月16日在中国提交的中国专利申请号No.202010547965.8的优先权，其全部内容通过引用包含于此。
技术领域
本申请涉及电子设备技术领域，特别涉及一种驱动机构。本申请还涉及一种包含该驱动机构的功能模块组件和电子设备。
背景技术
电子设备随着用户需求的不断增多，其功能越来越丰富，具体通过各功能模块在实现，有些功能模块在布局时侵占了电子设备的屏幕空间，导致电子设备较大、屏占比变小。因此，如何在满足功能需求的同时，兼顾电子设备的大小、布局或屏占比，成为了本领域技术人员亟待解决的问题。
发明内容
有鉴于此，本申请的目的在于提供一种驱动机构，以实现功能模块在使用时移出电子设备外部，不使用时，移入电子设备内部，提高屏占比。本申请的另一个目的在于提供一种包含该驱动机构的功能模块组件和电子设备，以实现功能模块在使用时移出电子设备外部，不使用时，移入电子设备内部，提高屏占比。
为达到上述目的，本申请提供以下技术方案：
一种驱动机构，用于电子设备，包括：
凸轮部件，所述凸轮部件具有沿其周向分布的至少一对对应的远心端和近心端，每对所述远心端和所述近心端均位于经过所述凸轮部件的转动中心的一直线上；
第一推动部件和第二推动部件，所述凸轮部件的转动中心位于彼此相对静止的所述第一推动部件和所述第二推动部件之间，所述第一推动部件和所 述第二推动部件均与所述凸轮部件的外轮廓面接触配合；
动力部件，与所述凸轮部件驱动连接，所述动力部件驱动所述凸轮部件转动，使所述转动中心与所述第一推动部件在所述第一推动部件和所述第二推动部件之间的连线方向上相对往复直线移动。
优选地，在上述的驱动机构中，所述动力部件驱动所述凸轮部件沿单一方向转动。
优选地，在上述的驱动机构中，所述凸轮部件的外轮廓线与任意经过所述转动中心的直线相交的两个交点之间的距离均等于第一推动部件和所述第二推动部件之间的距离。
优选地，在上述的驱动机构中，还包括直线移动部件，所述直线移动部件沿平行于所述第一推动部件和所述第二推动部件之间的连线的方向移动；所述第一推动部件和所述第二推动部件固定于所述直线移动部件，所述凸轮部件的转动轴线固定不动。
优选地，在上述的驱动机构中，还包括直线移动部件，所述直线移动部件沿平行于所述第一推动部件和所述第二推动部件之间的连线的方向移动；所述凸轮部件转动连接于所述直线移动部件，所述第一推动部件和所述第二推动部件的位置固定不动。
优选地，在上述的驱动机构中，还包括直线导向部件，所述直线导向部件与所述直线移动部件导向配合，用于导向所述直线移动部件沿直线方向移动。
优选地，在上述的驱动机构中，所述直线导向部件包括第一导轨和第二导轨，所述第一导轨和所述第二导轨分别与所述直线移动部件的两端导向配合。
优选地，在上述的驱动机构中，所述第一推动部件和所述第二推动部件均具有与所述凸轮部件的外轮廓面滑动配合的弧形配合面。
优选地，在上述的驱动机构中，所述凸轮部件具有奇数对沿其周向分布的所述远心端和所述近心端，且所述远心端和所述近心端沿所述凸轮部件的圆周方向均匀交替布置。
优选地，在上述的驱动机构中，所述凸轮部件具有三对沿其周向分布的 所述远心端和所述近心端，且所述远心端和所述近心端沿所述凸轮部件的圆周方向均匀交替布置，相邻所述远心端和所述近心端之间的布置角度为60°。
本申请还提供了一种功能模块组件，包括功能模块和驱动机构，所述驱动机构为如以上任一项所述的驱动机构，所述功能模块与所述驱动机构驱动连接，所述驱动机构驱动所述功能模块沿直线往复移动。
优选地，在上述的功能模块组件中，所述功能模块为摄像头模块、扬声器模块和听筒模块中的一种或多种组合。
本申请还提供了一种电子设备，包括设备本体和功能模块，所述设备本体设置有开口，还包括如以上任一项所述的驱动机构，所述驱动机构设置于所述设备本体，所述驱动机构与所述功能模块驱动连接，所述驱动机构驱动所述功能模块通过所述开口沿直线移出或移入所述设备本体。
优选地，在上述的电子设备中，所述驱动机构的动力部件为超声电机，所述超声电机与所述驱动机构的凸轮部件的转轴驱动连接。
与现有技术相比，本申请的有益效果是：
本申请提供的驱动机构包括凸轮部件、第一推动部件、第二推动部件和动力部件，其中，凸轮部件具有沿其周向分布的至少一对对应的远心端和近心端，每对远心端和近心端均位于经过转动中心的一直线上；凸轮部件的转动中心位于第一推动部件和第二推动部件之间，第一推动部件和第二推动部件均与凸轮部件的外轮廓面接触配合，动力部件与凸轮部件驱动连接，动力部件驱动凸轮部件转动，使凸轮部件的转动中心与第一推动部件在第一推动部件和第二推动部件之间的连线方向上相对往复直线移动。
工作时，动力部件驱动凸轮部件转动，转动过程中，由于远心端和近心端至凸轮部件的转动中心的距离不同，远心端逐渐与第一推动部件或第二推动部件推动接触，由于第一推动部件和第二推动部件均与凸轮部件的外轮廓面接触配合，因此，随着凸轮部件的旋转，凸轮部件的远心端能够交替与第一推动部件和第二推动部件推动接触，从而使凸轮部件的转动中心与第一推动部件在第一推动部件和第二推动部件之间的连线方向上相对往复直线移动，从而实现了凸轮部件转动的输入运动转变为往复直线移动的输出运动，应用于电子设备中时，可以实现功能模块在使用时移出电子设备外部，不使用时， 移入电子设备内部，使功能模块不占用电子设备的屏幕空间，提高了屏占比。
本申请提供的功能模块组件和电子设备由于采用了本申请中的驱动机构，因此能够实现可以实现功能模块在使用时移出电子设备外部，不使用时，移入电子设备内部，不占用电子设备的屏幕空间，提高屏占比。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本申请实施例提供的一种电子设备的结构示意图；
图2为本申请实施例提供的一种功能模块组件的结构示意图；
图3为本申请实施例提供的一种驱动机构的凸轮部件的结构示意图；
图4为本申请实施例提供的一种驱动机构的动力部件的结构示意图；
图5为本申请实施例提供的一种电子设备的功能模块移出过程的工作示意图；
图6为图5中的驱动机构的向左驱动移动的工作示意图；
图7为本申请实施例提供的一种电子设备的功能模块移入过程的工作示意图；
图8为图7中的驱动机构的向右驱动移动的工作示意图。
其中，1为设备本体、11为表带、12为表盘、2为功能模块、3为驱动机构、31为第一导轨、32为凸轮部件、321为远心端、322为近心端、323为转轴、33为第二导轨、34为直线移动部件、35为第二推动部件、36为第一推动部件、4为动力部件、41为耐磨材料层、42为弹性体、43为压电陶瓷、44为电源线路。
具体实施方式
本申请提供了一种驱动机构，实现了功能模块在使用时移出电子设备外部，不使用时，移入电子设备内部，不占用电子设备的屏幕空间，提高屏占 比。
本申请还提供一种包含该驱动机构的功能模块组件和电子设备，实现了功能模块在使用时移出电子设备外部，不使用时，移入电子设备内部，不占用电子设备的屏幕空间，提高屏占比。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参考图2、图3、图5-图8所示，本申请实施例提供了一种驱动机构3，应用于电子设备，驱动机构3其包括凸轮部件32、第一推动部件36、第二推动部件35和动力部件4，其中，凸轮部件32具有沿其周向分布的至少一对对应的远心端321和近心端322，具体可以为一对、两对、三对、四对、五对等更多对，远心端321至凸轮部件32的转动中心的距离大于近心端322至转动中心的距离，远心端321为凸轮部件32的外轮廓面距离转动中心最远的一端，近心端322为凸轮部件32的外轮廓面距离转动中心最近的一端，每对远心端321和近心端322均位于经过转动中心的一直线上，且每对远心端321和近心端322分别位于转动中心的两侧；第一推动部件36和第二推动部件35彼此相对静止，即第一推动部件36和第二推动部件35保持间距不变，图中的第一推动部件36和第二推动部件35并不限定两者的布置方位，也可以反过来设置，凸轮部件32的转动中心位于第一推动部件36和第二推动部件35之间，第一推动部件36和第二推动部件35均与凸轮部件32的外轮廓面接触配合；动力部件4与凸轮部件32驱动连接，动力部件4驱动凸轮部件32转动，使凸轮部件32的转动中心与第一推动部件36(由于第一推动部件36和第二推动部件35相对静止，因此，也可以说是凸轮部件32的转动中心与第二推动部件35)在第一推动部件36和第二推动部件35之间的连线方向上相对往复直线移动。如果凸轮部件32的转动中心固定不动，则第一推动部件36和第二推动部件35相对凸轮部件32沿直线往复移动，如果第一推动部件36和第二推动部件35固定不动，则凸轮部件32相对第一推动部件36和第二推动部件35沿直线往复移动。
该驱动机构3的工作原理和工作过程如下：工作时，动力部件4驱动凸轮部件32转动，当凸轮部件32由近心端322与第一推动部件36接触转动至远心端321与第一推动部件36接触的过程中，凸轮部件32的转动中心与第一推动部件36在第一推动部件36和第二推动部件35之间的连线方向上发生相对直线移动，且转动中心与第一推动部件36的距离增大，而转动中心与第二推动部件35的距离缩短；当凸轮部件32继续沿同一方向转动或反向转动，凸轮部件32由远心端321与第一推动部件36接触转动至近心端322与第一推动部件36接触，此过程中，凸轮部件32由近心端322与第二推动部件35接触转动至远心端321与第二推动部件35接触，凸轮部件32的转动中心与第一推动部件36在第一推动部件36和第二推动部件35之间的连线方向上发生相对直线移动，且转动中心与第二推动部件35的距离增大，而转动中心与第一推动部件36的距离缩短。如此，随着凸轮部件32的继续旋转，凸轮部件32的远心端321能够交替与第一推动部件36和第二推动部件35推动接触，从而使凸轮部件32的转动中心与第一推动部件36在第一推动部件356和第二推动部件35之间的连线方向上发生相对往复直线移动，从而实现了凸轮部件32转动的输入运动转变为往复直线移动的输出运动。应用于电子设备中时，可以实现功能模块2在使用时移出电子设备外部，不使用时，移入电子设备内部，使功能模块2不占用电子设备的屏幕空间，提高了屏占比。在满足功能需求的同时，兼顾了电子设备的大小、布局或屏占比。
进一步地，在本实施例中，动力部件4驱动凸轮部件32沿单一方向转动。由于现有技术中的实现功能模块移出和移入电子设备的驱动机构通常为直线驱动机构，即通过电机和传动机构实现功能模块的移出和移入，而移入和移出的切换是通过电机的转向的改变实现的。在用户错误调出功能模块并紧急关闭时，功能模块经过快速移入、移出的过程，电机则需要经过正向转动-急停-反向转动的快速转换过程，由于电机中间增加了停止步骤，影响了电机的使用寿命，也会容易造成功能模块的移出、移入动作不够顺畅。因此，本申请动力部件4驱动凸轮部件32沿单一方向转动，同样能够实现往复直线运动的输出。
具体工作时，动力部件4驱动凸轮部件32沿单一方向转动，当凸轮部件 32由近心端322与第一推动部件36接触转动至远心端321与第一推动部件36接触的过程中，凸轮部件32的转动中心与第一推动部件36在第一推动部件36和第二推动部件35之间的连线方向上发生相对直线移动，且转动中心与第一推动部件36的距离增大，而转动中心与第二推动部件35的距离缩短；当凸轮部件32继续沿同一方向转动，凸轮部件32由远心端321与第一推动部件36接触转动至近心端322与第一推动部件36接触，此过程中，凸轮部件32由近心端322与第二推动部件35接触转动至远心端321与第二推动部件35接触，凸轮部件32的转动中心与第一推动部件36在第一推动部件36和第二推动部件35之间的连线方向上发生相对直线移动，且转动中心与第二推动部件35的距离增大，而转动中心与第一推动部件36的距离缩短。如此，随着凸轮部件32的继续旋转，凸轮部件32的远心端321能够交替与第一推动部件36和第二推动部件35推动接触，从而使凸轮部件32的转动中心与第一推动部件36在第一推动部件356和第二推动部件35之间的连线方向上发生相对往复直线移动，从而实现了凸轮部件32沿单一方向转动的输入运动转变为往复直线移动的输出运动。
因此，在驱动机构进行快速直线往复移动的情况下，不需要中间急停凸轮部件32，也不需要改变凸轮部件32的转动方向，当动力部件4应用电机对驱动机构进行驱动时，提高了电机使用寿命，且使驱动机构往复移动顺畅。
进一步地，在本实施例中，凸轮部件32的外轮廓线与任意经过转动中心的直线相交的两个交点之间的距离均等于第一推动部件36和第二推动部件35之间的距离，如此设置，能够使凸轮部件32的外轮廓面再任意转动角度均与第一推动部件36和第二推动部件35保持接触配合。从而使凸轮部件32与第一推动部件36和第二推动部件35之间的配合更连续顺畅，不存在脱离接触配合，造成动作间断停滞的情况。
如图2所示，在本实施例中，驱动机构3还包括直线移动部件34，直线移动部件34沿平行于第一推动部件36和第二推动部件35之间的连线的方向移动；第一推动部件36和第二推动部件35固定于直线移动部件34，凸轮部件32的转动轴线固定不动。如此设置，通过直线移动部件34将第一推动部件36和第二推动部件35定位固定，保持相对位置不变，直线移动部件34、 第一推动部件36和第二推动部件35作为整体能够直线移动，并作为动力输出端；凸轮部件32只能转动，无法直线移动，因此，凸轮部件32的单一方向转动能够驱动第一推动部件36和第二推动部件35沿直线方向往复移动，并通过直线移动部件34输出直线移动。
当然，也可以不设置直线移动部件34，直接将第一推动部件36和第二推动部件35作为动力输出端与外部部件连接。
本实施例提供了另一种驱动机构3，该驱动机构3同样还包括直线移动部件34，直线移动部件34沿平行于第一推动部件36和第二推动部件35之间的连线的方向移动；凸轮部件32转动连接于直线移动部件34，第一推动部件36和第二推动部件35的位置固定不动。如此设置，凸轮部件32和直线移动部件34作为一个整体沿直线方向移动，与此同时，凸轮部件32能够在直线移动部件34上转动，凸轮部件32在转动过程中，凸轮部件32与固定不动的第一推动部件36和第二推动部件35配合，使凸轮部件32和直线移动部件34一起相对第一推动部件36和第二推动部件35沿直线方向移动，直线移动部件34作为动力输出端输出直线移动。
当然，也可以不设置直线移动部件34，直接将凸轮部件32与外部部件连接，输出直线运动。
进一步地，在本实施例中，驱动机构3还包括直线导向部件，直线导向部件与直线移动部件34导向配合，用于导向直线移动部件34沿直线方向移动。直线导向部件只允许直线移动部件34沿直线方向移动，不能进行转动。从而保证了凸轮部件32的转动转化为直线移动部件34的直线移动。
具体地，在本实施例中，直线导向部件包括第一导轨31和第二导轨33，第一导轨31和第二导轨33分别与直线移动部件34的两端导向配合。直线移动部件34优选为杆状部件，杆状部件沿其长度方向直线移动，第一导轨31和第二导轨33分别与杆状部件的两端导向配合，只允许杆状部件沿直线方向移动，不允许杆状部件绕其轴线转动或绕凸轮部件32的转动轴线转动。通过第一导轨31和第二导轨33能够平稳地导向直线移动部件34，当然，直线导向部件还可以为一个导轨或更多个导轨。或者直线导向部件为导槽结构，直线移动部件34设置有与导槽结构配合导向的导块，同样能够实现直线导向， 并不局限于本实施例所列举的结构形式。
在本实施例中，第一推动部件36和第二推动部件35均具有与凸轮部件32的凸轮面滑动配合的弧形配合面，从而使凸轮部件32的凸轮面与第一推动部件36和第二推动部件35进行推动接触时，能够使凸轮部件32的转动顺畅地转化为直线移动，避免出现卡止现象。第一推动部件36和第二推动部件35优选为圆柱形杆，圆柱形杆平行于凸轮部件32的转动轴线。
作为优化，在本实施例中，凸轮部件32沿其周向设置有奇数对远心端321和近心端322，即远心端321和近心端322的对数为一对、三对、五对、七对等，凸轮部件32的远心端321和近心端322沿圆周方向均匀交替布置。以三对远心端321和近心端322为例进行说明，如图3所示，三个远心端321和三个近心端322交替均匀布置，相邻远心端321和近心端322之间的夹角为60°，形成三角齿轮状结构，凸轮部件32每转动60°，直线移动改变一次方向。对于只有一对远心端321和近心端322的凸轮部件32，则凸轮部件32每转动180°，直线移动改变一次方向。对于具有五对远心端321和近心端322的凸轮部件32，则凸轮部件32每转动36°，直线移动改变一次方向。凸轮部件32优选采用三对远心端321和近心端322的结构，结构简单，且凸轮部件32的转动角度和直线移动改变方向所需的时间适当。通过均匀设置奇数对远心端321和近心端322，能够实现有规律的、周期性的直线往复移动。
当然，凸轮部件32也可以设置其他对数的远心端321和近心端322，但是，对于具有偶数对远心端321和近心端322的凸轮部件32，为了使每对远心端321和近心端322位于经过凸轮部件32的转动中心的同一直线上，偶数对远心端321和近心端322不能沿圆周方向均匀分布，如此，虽然能够实现直线往复移动，但不能实现有规律的、周期性的直线往复移动。
如图2所示，基于以上任一实施例所描述的驱动机构，本申请实施例还提供了一种功能模块组件，包括功能模块2和驱动机构，其中，驱动机构为如以上任一实施例所描述的驱动机构3，功能模块2与驱动机构3驱动连接，驱动机构3驱动功能模块2沿直线往复移动。
具体地，当第一推动部件36和第二推动部件35沿直线移动，而凸轮部件32的转动轴线固定不动时，功能模块2与第一推动部件36和第二推动部 件35一起沿直线移动。
工作时，在动力部件4驱动凸轮部件32转动下，凸轮部件32与第一推动部件36和第二推动部件35配合，驱动第一推动部件36、第二推动部件35和功能模块2一起沿直线往复移动。
或者，当第一推动部件36和第二推动部件35固定不动，而凸轮部件32的转动轴线沿直线移动时，功能模块2与凸轮部件32一起沿直线移动。
工作时，在动力部件4驱动凸轮部件32转动下，凸轮部件32与第一推动部件36和第二推动部件35配合，反向推动凸轮部件32和功能模块2一起沿直线往复移动。
可见，功能模块2在驱动机构3的驱动下进行直线往复移动，实现了功能模块2在使用时移出电子设备外部，不使用时，移入电子设备内部，使功能模块1不占用电子设备的屏幕空间，提高了屏占比。
进一步地，动力部件4驱动凸轮部件32沿单一方向转动，因此，功能模块2在驱动机构3的驱动下进行快速直线往复移动的情况下，不需要中间急停凸轮部件32，也不需要改变凸轮部件32的转动方向，使驱动机构3往复移动顺畅，当动力部件4应用电机对驱动机构3进行驱动时，因为不需要电机急停和换向，从而提高了电机使用寿命。
在本实施例中，功能模块2为摄像头模块、扬声器模块和听筒模块中的一种或多种组合。即能够满足在电子设备中移出和移入的功能模块2均可以应用本申请中的驱动机构3。
如图1、图5-图8所示，基于以上任一实施例所描述的驱动机构，本申请实施例还提供了一种电子设备，包括设备本体1和功能模块2，设备本体1设置有开口，电子设备还包括如以上任一实施例所描述的驱动机构3，驱动机构3设置于设备本体1，驱动机构3与功能模块2驱动连接，驱动机构3驱动功能模块2沿直线移出或移入设备本体1。
具体地，对于第一推动部件36和第二推动部件35能够直线移动，而凸轮部件32不能直线移动的结构，功能模块2可以直接与第一推动部件36和第二推动部件35固定连接，功能模块2能够在设备本体1中直线导向移动；或者，设置直线移动部件34，直线移动部件34的一端与功能模块2固定， 第一推动部件36和第二推动部件35固定于直线移动部件34，直线移动部件34在设备本体1中直线移动。
该电子设备的功能模块2的移出和移入操作如下：工作时，如图5和图6所示，功能模块2移出设备本体1的过程中，凸轮部件32在动力部件4的驱动下转动，图中显示为凸轮部件32顺时针转动，当然，也可以为逆时针转动，凸轮部件32的远心端321和近心端322与第一推动部件36和第二推动部件35配合，远心端321推动第一推动部件36沿直线方向朝向设备本体1外部移动，当远心端321的顶点与第一推动部件36接触，近心端322的顶点与第二推动部件35接触时，以三对远心端321和近心端322为例，则凸轮部件32转动了60°，此时，功能模块2移出至设备本体1的最大移出位置，动力部件4可停止驱动凸轮部件32转动，实现了功能模块2移出设备本体1。
如图7和图8所示，功能模块2移入设备本体1的过程中，动力部件4继续驱动凸轮部件32沿相同方向转动或者反向转动，凸轮部件32的远心端321推动第二推动部件35沿直线方向朝向设备本体1内部移动，当远心端321的顶点与第二推动部件35接触，近心端322的顶点与第一推动部件36接触时，以三对远心端321和近心端322为例，则凸轮部件32再次转动了60°，或反向转动了60°，此时，功能模块2移入至设备本体1的最大移入位置，即复位位置，动力部件4停止驱动凸轮部件转动，实现功能模块2移入设备本体1。
对于第一推动部件36和第二推动部件35固定不动，而凸轮部件32能直线移动的结构，第一推动部件36和第二推动部件35固定设置于设备本体1，凸轮部件32可以转动连接于功能模块2上，功能模块2能够在设备本体1中直线导向移动；或者，设置直线移动部件34，直线移动部件34的一端与功能模块2固定，凸轮部件32转动连接于直线移动部件34，直线移动部件34在设备本体1中直线移动。
该电子设备的功能模块2的移出和移入操作如下：工作时，如图5和图6所示，功能模块2移出设备本体1的过程中，凸轮部件32在动力部件4的驱动下转动，图中显示为凸轮部件32顺时针转动，当然，也可以为逆时针转动，凸轮部件32的远心端321和近心端322与第一推动部件36和第二推动 部件35配合，远心端321与第二推动部件35推动接触，由于第二推动部件35固定不动，因此，反向推动凸轮部件32和直线移动部件34沿直线方向朝向设备本体1外部移动，当远心端321的顶点与第二推动部件35接触，近心端322的顶点与第一推动部件35接触时，以三对远心端321和近心端322为例，则凸轮部件32转动了60°，此时，功能模块2移出至设备本体1的最大移出位置，动力部件4可停止驱动凸轮部件32转动，实现了功能模块2移出设备本体1。
如图7和图8所示，功能模块2移入设备本体1的过程中，动力部件4继续驱动凸轮部件32沿相同方向转动或者反向转动，凸轮部件32的远心端321与第一推动部件36推动接触，由于第一推动部件36固定不动，因此，反向推动凸轮部件32和直线移动部件34沿直线方向朝向设备本体1内部移动，当远心端321的顶点与第一推动部件36接触，近心端322的顶点与第二推动部件35接触时，以三对远心端321和近心端322为例，则凸轮部件32再次转动了60°，或者反向转动了60°，此时，功能模块2移入至设备本体1的最大移入位置，即复位位置，动力部件4可停止驱动凸轮部件32转动，实现功能模块2移入设备本体1。
可见，该电子设备采用了本申请中的驱动机构3，因此，能够实现功能模块2的自动移出和移入操作，可见，功能模块2在驱动机构3的驱动下进行直线往复移动，实现了功能模块2在使用时移出电子设备外部，不使用时，移入电子设备内部，使功能模块2不占用电子设备的屏幕空间，提高了屏占比。在满足功能需求的同时，兼顾了电子设备的大小、布局或屏占比。
进一步地，动力部件4驱动凸轮部件32沿单一方向转动，与现有技术相比，功能模块2在驱动机构3的驱动下进行快速移出和移入的情况下，不需要中间急停凸轮部件32，也不需要改变凸轮部件32的转动方向，使驱动机构3往复移动顺畅，当动力部件4应用电机对驱动机构3进行驱动时，因为不需要电机急停和换向，从而提高了电机使用寿命。
如图4所示，进一步地，在本实施例中，动力部件4为超声电机，超声电机与凸轮部件32的转轴323驱动连接。超声电机主要包括电源线路44、压电陶瓷43、弹性体42和耐磨材料层41。其中，电源线路44用于提供高频 交流电信号，压电陶瓷43为环形压电陶瓷片，压电陶瓷43与电源线路44连接，压电陶瓷43可以选用BaTiO 3、PZT等材料，弹性体42贴覆于压电陶瓷43的一端，能发生形变，如铜片，能够增大变形量，根据实际需要可以选择是否使用，耐磨材料层41的一端与弹性体42摩擦接触，另一端与凸轮部件32的转轴323的一端结合，耐磨材料层41可以选用碳纳米材料。
超声电机的工作原理是：压电陶瓷43利用逆压电效应，能够在高频交流电信号形成的电场下发生交替伸缩变形(每次振幅为约2-5微米，一秒伸缩7万～10万次左右，每秒位移可达数厘米，满足产品需求)，在一定的频率和电压下条件下弹性体42形成沿环形陶瓷片周向旋转的行波，使弹性体42表面任意一点形成按照椭圆轨迹超声波振动，这种振动通过弹性体42放大，弹性体42和耐磨材料层41之间摩擦接触，使耐磨材料层41旋转运动，由于转轴323粘结固定在耐磨材料层41上，使得转轴323和耐磨材料层41一起旋转，从而带动凸轮部件32转动。
工作时，超声电机供电产生扭矩，带动凸轮部件32沿单一方向转动，超声电机停止供电，扭矩消失，凸轮部件32停止转动，且能够依靠超声电机的弹性体42和耐磨材料层41之间的静摩擦力停留在转动位置。
采用超声电机作为动力部件4，由于不需要线圈和磁铁，超声电机不产生电磁波和噪音，所以外部环境对它影响小，无电磁干扰，对电子产品的电子器件无影响；此外，相对其他动力部件4，超声电机结构简单，可节省大量空间，尤其是电子设备的厚度方向。
当然，动力部件4也可以采用步进电机和减速机组合，同样能够实现动力驱动，只是结构不如超声电机简单，存在电磁干扰。
为了实现电子设备的功能模块2的自动移出和移入，在本实施例中，超声电机与设备本体1中的处理器控制连接；处理器用于获取功能模块2的移出指令后，控制超声电机供电转动，当功能模块2移出至指定位置后(通常为功能模块2的最大移出位置)，处理器控制超声电机停止供电转动；当处理器获取功能模块2的移入指令后，控制超声电机继续供电转动，当功能模块2移入复位后，处理器控制超声电机停止供电转动。
移出指令和移入指令的触发可以通过实体按键或虚拟按键或无线信号来 操作。
进一步地，在本实施例中，处理器预设有时间控制程序，处理器在获取移出指令或移入指令后通过时间控制程序控制超声电机的供电转动时间，使功能模块2移出至指定位置或移入复位。
供电转动时间根据凸轮部件32的转动规律确定，以三对远心端321和近心端322为例进行说明，凸轮部件32每转动60°所需要的时间即为供电转动时间，在时间控制程序中预设供电转动时间，处理器自获取移出指令或移入指令时刻起，当超声电机工作时间达到供电转动时间后，超声电机停止供电转动。从而实现了功能模块2的自动移出和移入。
当然，功能模块2的自动移出和移入还可以通过其它方式实现，在本实施例中，电子设备还包括位移检测模块，位移检测模块与处理器控制连接，位移检测模块用于检测功能模块2相对设备本体1的位置信息；处理器在获取移出指令或移入指令后，通过获取位移检测模块检测的位置信息控制超声电机的供电转动时间，使功能模,2移出至指定位置或移入位置。
工作时，当功能模块2移出设备本体1的过程中，如果位移检测模块检测到功能模块2达到指定移出位置，则处理器获取位移检测模块检测的位置信息，控制超声电机停止供电转动，当功能模块2移入设备本体1的过程中，如果位移检测模块检测到功能模块2到达复位位置，则处理器获取位移检测模块检测的位置信息，控制超声电机停止供电转动。从而实现了功能模块2的自动移出和移入。
此外，超声电机的供电控制也可以通过角度传感器对凸轮部件32的转动角度进行检测，以三对远心端321和近心端322为例，当检测到凸轮部件32由复位位置转动了60°时，处理器获取角度传感器检测的角度信息，控制超声电机停止供电转动，此时，功能模块2移出至指定位置；当角度传感器检测到凸轮部件32由移出位置继续转动了60°时，处理器获取角度传感器检测的角度信息，控制超声电机停止供电转动，此时，功能模块2移入至移入位置。
当然，还有其它控制超声电机的供电和停电的方式，并不局限于以上实施例所列举的方式。
在本实施例中，电子设备为穿戴式电子设备，穿戴式电子设备可以为智 能手表、智能手环、智能眼镜、智能手套、智能头盔、智能服饰或智能鞋等，只要存在功能模块2移出和移入的穿戴式电子设备均在本申请的保护范围之内。
在本实施例中，功能模块2为摄像头模块、扬声器模块和听筒模块中的一种或多种组合。即能够满足在穿戴式电子设备中移出和移入的功能模块2均可以应用本申请中的驱动机构3。
以智能手表为例，功能模块2可以是摄像头模块，设备本体1包括表盘12和表带11，表盘12设置有显示屏，除指示时间之外，还可具有提醒、导航、校准、监测、交互等其中一种或者多种功能；显示方式包括指针、数字、图像等。摄像头模块与驱动机构3驱动连接，具体地，摄像头模块与直线移动部件34的一端固定。
工作时，摄像头模块移出的过程如下，如图5和图6所示：
第一步：在显示屏交互界面点击自拍模式，触发移出指令；
第二步：处理器收到移出指令后，发送给超声电机的电源线路一个供电信号，电源线路44产生高频交流电信号，此高频交流电信号加载在压电陶瓷43上，压变陶瓷43会交替伸缩变形，在一定的频率和电压下条件下弹性体42形成沿周向旋转的行波，使弹性体42表面任意一点产生按照椭圆轨迹的超声波振动，这种振动通过弹性体42和耐磨材料层41之间的摩擦作用，使耐磨材料层41和转轴323旋转运动，进而带动凸轮部件32转动；
第三步；凸轮部件32旋转运动，通过第一推动部件36和第二推动部件35相互配合，推动直线移动部件34向左运动，使得摄像头模块伸出至指定位置，处理器控制超声电机供电停止，实现拍照。
摄像头模块移入的过程如下，如图7和图8所示：
第一步：在显示屏交互界面点击停止模式，触发移入指令；
第二步：处理器收到移入指令后，再次发送给超声电机的电源线路44一个相同的供电信号，电源线路44产生高频交流电信号，最终使凸轮部件32继续转动，凸轮部件32和第一推动部件36和第二推动部件35继续配合运动，推动直线移动部件34反向向右运动，使得摄像头模块收回至移入位置，处理器控制超声电机停止供电，摄像关闭。
通过上述工作过程可知，智能手表能够在使用摄像头模块时自动移出，不使用时自动收回，实现了摄像头模块的自动移出和移入，从而增大了智能手表显示区域，提高了屏占比，提升用户体验。
对于智能手表，摄像头模块设置于表盘12的侧面，与表带11不在同一侧，方便摄像头模块的移出。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下，在其它实施例中实现。因此，本申请将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (14)

  1. 一种驱动机构，用于电子设备，包括：
    凸轮部件(32)，所述凸轮部件(32)具有沿其周向分布的至少一对对应的远心端(321)和近心端(322)，每对所述远心端(321)和所述近心端(322)均位于经过所述凸轮部件(32)的转动中心的一直线上；
    第一推动部件(36)和第二推动部件(35)，所述凸轮部件(32)的转动中心位于所述第一推动部件(35)和所述第二推动部件(36)之间，所述第一推动部件(36)和所述第二推动部件(35)均与所述凸轮部件(32)的外轮廓面接触配合；
    动力部件(4)，与所述凸轮部件(32)驱动连接，所述动力部件(4)驱动所述凸轮部件(32)转动，使所述转动中心与所述第一推动部件(36)在所述第一推动部件(36)和所述第二推动部件(35)之间的连线方向上相对往复直线移动。
  2. 根据权利要求1所述的驱动机构，其中，所述动力部件(4)驱动所述凸轮部件(32)沿单一方向转动。
  3. 根据权利要求1所述的驱动机构，其中，所述凸轮部件(32)的外轮廓线与任意经过所述转动中心的直线相交的两个交点之间的距离均等于第一推动部件(36)和所述第二推动部件(35)之间的距离。
  4. 根据权利要求1所述的驱动机构，还包括直线移动部件(34)，所述直线移动部件(34)沿平行于所述第一推动部件(36)和所述第二推动部件(35)之间的连线的方向移动；所述第一推动部件(36)和所述第二推动部件(35)固定于所述直线移动部件(34)，所述凸轮部件(32)的转动轴线固定不动。
  5. 根据权利要求1所述的驱动机构，还包括直线移动部件(34)，所述直线移动部件(34)沿平行于所述第一推动部件(36)和所述第二推动部件(35)之间的连线的方向移动；所述凸轮部件(32)转动连接于所述直线移动部件(34)，所述第一推动部件(36)和所述第二推动部件(35)的位置固定不动。
  6. 根据权利要求4或5所述的驱动机构，还包括直线导向部件，所述直线导向部件与所述直线移动部件(34)导向配合，用于导向所述直线移动部 件(34)沿直线方向移动。
  7. 根据权利要求6所述的驱动机构，其中，所述直线导向部件包括第一导轨(31)和第二导轨(33)，所述第一导轨(31)和所述第二导轨(33)分别与所述直线移动部件(34)的两端导向配合。
  8. 根据权利要求1-5任一项所述的驱动机构，其中，所述第一推动部件(36)和所述第二推动部件(35)均具有与所述凸轮部件(32)的外轮廓面滑动配合的弧形配合面。
  9. 根据权利要求1-5任一项所述的驱动机构，其中，所述凸轮部件(32)具有奇数对沿其周向分布的所述远心端(321)和所述近心端(322)，且所述远心端(321)和所述近心端(322)沿所述凸轮部件(32)的圆周方向均匀交替布置。
  10. 根据权利要求8所述的驱动机构，其中，所述凸轮部件(32)具有三对沿其周向分布的所述远心端(321)和所述近心端(322)，且所述远心端(321)和所述近心端(322)沿所述凸轮部件(32)的圆周方向均匀交替布置，相邻所述远心端(321)和所述近心端(322)之间的布置角度为60°。
  11. 一种功能模块组件，包括功能模块(2)和驱动机构，其中，驱动机构为如权利要求1-10任一项所述的驱动机构(3)，所述功能模块(2)与所述驱动机构(3)驱动连接，所述驱动机构(3)驱动所述功能模块(2)沿直线往复移动。
  12. 根据权利要求11所述的功能模块组件，其中，所述功能模块(2)为摄像头模块、扬声器模块和听筒模块中的一种或多种组合。
  13. 一种电子设备，包括设备本体(1)和功能模块(2)，所述设备本体设置有开口，还包括如权利要求1-10任一项所述的驱动机构(3)，所述驱动机构(3)设置于所述设备本体(1)，所述驱动机构(3)与所述功能模块(2)驱动连接，所述驱动机构(3)驱动所述功能模块(2)通过所述开口沿直线移出或移入所述设备本体(1)。
  14. 根据权利要求13所述的电子设备，其中，所述驱动机构(3)的动力部件(4)为超声电机，所述超声电机与所述驱动机构(3)的凸轮部件(32)的转轴(323)驱动连接。
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